One embodiment of the present invention provides a method for performing a paging-related operation by a base station of a second user equipment (UE) having connection with a first UE in a wireless communication system, the method comprising the steps of: receiving a paging message for the second UE from a second MME by the base station; and when the second UE is in a radio resource control (RRC)-connected state while being in a core network (CN)-idle state, transmitting a message, including information related to a connection state of the second UE, as a response to the paging message to the second MME by the base station.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of performing a paging-related operation by a base station of a second user equipment (UE) having a connection to a first UE in a wireless communication system, the method comprising: receiving a paging message for the second UE from a second mobility management entity (MME) by the base station; and based on that the second UE is in both of a core network (CN) idle state and a radio resource control (RRC) connected state, transmitting, by the base station to the second MME, a message including information related to a connection state of the second UE in response to the paging message, although a response to the paging message is not received from the second UE while the second UE is in the CN idle state and the RRC connected state.
2. The method according to claim 1 , wherein the RRC connected state is a state to which the second UE has transitioned in response to reception of a network connection request from the first UE.
3. The method according to claim 1 , wherein the information related to the connection state of the second UE includes information indicating that the base station is serving the second UE or information indicating that the second UE is in the RRC connected state.
4. The method according to claim 1 , wherein the message including the information related to the connection state of the second UE is a paging response message.
5. The method according to claim 1 , wherein upon receipt of the message including the information related to the connection state of the second UE, the second MME establishes a user plane for the second UE.
6. The method according to claim 1 , wherein when the second UE is in both of the CN idle state and an RRC idle state, the base station transmits a paging message for the second UE.
7. The method according to claim 1 , wherein the first UE is a remote UE and the second UE is a relay UE.
8. A base station for performing an operation related to paging of a second user equipment (UE) having a connection to a first UE in a wireless communication system, the base station comprising: a transceiver; and a processor, wherein the processor is configured to: receive a paging message for the second UE from a second mobility management entity (MME); and based on that the second UE is in both of a core network (CN) idle state and a radio resource control (RRC) connected state, transmit, to the second MME, a message including information related to a connection state of the second UE in response to the paging message, although a response to the paging message is not received from the second UE while the second UE is in the CN idle state and the RRC connected state.
9. The base station according to claim 8 , wherein the RRC connected state is a state to which the second UE has transitioned in response to reception of a network connection request from the first UE.
10. The base station according to claim 8 , wherein the information related to the connection state of the second UE includes information indicating that the base station is serving the second UE or information indicating that the second UE is in the RRC connected state.
11. The base station according to claim 8 , wherein the message including the information related to the connection state of the second UE is a paging response message.
12. The base station according to claim 8 , wherein upon receipt of the message including the information related to the connection state of the second UE, the second MME establishes a user plane for the second UE.
13. The base station according to claim 8 , wherein when the second UE is in both of the CN idle state and an RRC idle state, the base station transmits a paging message for the second UE.
14. The base station according to claim 8 , wherein the first UE is a remote UE and the second UE is a relay UE.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
February 6, 2018
August 25, 2020
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